There is, however, a more fundamental and effective source at which to study
naturalness--a trait which, once lost, is shy of recapture: that source is the
common conversation of any well-bred circle. _This_ is the standard we strive to
reach on both stage and platform--with certain differences, of course, which
will appear as we go on. If speaker and actor were to reproduce with absolute
fidelity every variation of utterance--every whisper, grunt, pause, silence, and
explosion--of conversation as we find it typically in everyday life, much of the
interest would leave the public utterance. Naturalness in public address is
something more than faithful reproduction of nature--it is the reproduction of
those _typical_ parts of nature's work which are truly representative of the
whole.
The realistic story-writer understands this in writing dialogue, and we must
take it into account in seeking for naturalness through change of tempo.
Suppose you speak the first of the following sentences in a slow tempo, the
second quickly, observing how natural is the effect. Then speak both with the
same rapidity and note the difference.
I can't recall what I did with my knife. Oh, now I remember I gave it to Mary.
We see here that a change of tempo often occurs in the same sentence--for tempo
applies not only to single words, groups of words, and groups of sentences, but
to the major parts of a public speech as well.